Since Google has dropped Play Store support for Android 4.4, you will likely need to sideload the APK from a reputable archive: Ars Technica APKMirror - Facebook (Android 4.4+)
Note: Facebook Lite lacks some features (like heavy games and advanced AR filters), but it handles News Feed, Messenger, and notifications perfectly. Facebook Apk For Android 4.4.4
As of late 2024, Facebook's Graph API v19.0 will likely disable endpoints required by legacy APKs. You will eventually see This is a server-side kill switch. Since Google has dropped Play Store support for Android 4
You can find these archived versions on Uptodown or OldVersion.com . Installation Steps but it handles News Feed
The news feed may take 10-15 seconds just to populate.